Gap adjuster for spark plugs



G.' H. T|SDALE, H. G. S ANDERSON, AND E. B. THORNHILL.

GAP ADJUSTER FOR SPAR-k PLUGS.

APPLICATION FILED MAR. I4. 1922.

MES Patented Oct. 10,1922.

I N V EN TORS. Gordon H. 77's dale fled-or QS-flndersyn y Edwin 5 Thain/71- ATTOR Y Patented net in, man. TA ,it

GORDON H. TISDALE, HECTOR G. S. ANDERSON, AND EDWIN 13. THORNI-IILL, OF H'URLIEY, NEW MEXICO.

id i

GA]? ADJUSTER FUR SPAR-K PLUGS.

Application filed March 141, 1922. Serial No. 543,801.

To all whom it may concern: with a gage pin 9 extending across a notch Be it known that we, Gonnon H. TIsoALn, 8 in the side of said member, and with a Hnoron G. S. ANnnRsoN, and EDWIN B. hole 7 for suspending or attaching the de- THORNHILL, citizen of the United States, vice to a hook, chain or other support.

residing at Hurley, in the county of Grant The device may be used by placing it on 15 and State or New Mexico, have invented a a spark plug, shown in Fig. 2, with the new and useful Gap Adjuster for Spark opening 2 fittingthe center point 12 of Plugs, of which the following is a specifithe spark plug l1, and the side point ti or electrode 13 of the spark plug ex- This invention relates to means for ad tending in slot By then turning 50 justing or spacing the points or electrodes the device to the right, the cam race of spark plugs to give a spark gap of proper l.- may be caused to engage the point length, and the main object of the invention 13 to bend the same inwardly; or by turnis to provide simple and cheap means for ing the device to the left, the cam face 5 15 this purpose which will enable quick and may be'caused to engage the point 13 to bend 55 accurate adjustment of the points. the same outwardly. In this manner the The accompanying drawings illustrate an electrode or point 13 may be adjusted inembodiment of our invention; Fig. 1 being Wardly or outwardly as may be required a plan View of the device and Fig. 2 a perto give the proper spacing. The gage pin spective View showing the device in position 9 may be used to determine when the points 60 on a spark plug. are properly spaced, by slipping it between The device consists of a plate or member such points.

1, formed of suitable material, such as metal, The slot 10 in the edge 01'? member 1 may having therein a centering opening 2 and he used to engage "the point 13 and adjust a slot 3 adjacent said opening, the outer it to a radial position with respect to the 65 and inner edges land 5 of said slot being center point of the spark plug. formed as cams extending eccentrically with l i 'liat we claim is: reference to opening 2. The eccentricity or it spark plug gap adjuster comprising a inclination of the outer edge portion t with member having a centering opening adaptreference to an are (indicated by dotted line ed to it on a spark )lug point and provided a) concentric with openings 2, is opposite with a slot having portions reversely eccenor reverse to theinclination oi the inner tric to such opening, and adapted to act as edge portion 5 with reference to an arc (incam means for adjusting the other spark dicated at b) concentric with such opening. plug point inwardly or outwardly.

Opening 2 is adapted to fit on the center In testimony whereof we have hereunto 75 point oi a spark plug, and slot 3 is adapted subscribed our names this 1st day of March, to. receive the side point of the plug and to 1922.

engage, by its cam edges 4 and 5, with said GORDON H. TTSDALE. point to adjust the same. HECTG'R G. S; ANDERSON.

40 The member 1 may be further provided EDWIN 1B. THORNHILL. 

